[TRNSYS-users] Type60t and convergence problems

[Matteo DF]

Hi everybody,

I'm developing a model which simulates a solar assisted ground source heat
pump. In this model I'm using 3 type60t tanks, one for domestic hot water,
one for the ground heat exchangers (just before the heat pump) and another
one is used for building heating.

The problem is this last tank, in fact it contains 3 internal heat
exchangers, one for heat coming from the hp, one from solar collectors and
the last one for the auxiliary heating... The problem is that if I connect
the HP to it I get convergence errors (which are not present if the hp isn't
connected...). I checked every parameter, I've modified the tollerance for
convergence from 0.001 to 0.01 and placed some type31 tubes in every section
which convoys water to the tank... But the problem persists...

How do I solve these problems? Isn't there a simpler tank which I can use
that have the possibility to include at least 3 heat exchangers?

Thanks!
Matteo.

-- 
La scoperta è vedere ciò che tutti hanno sempre visto e
pensare ciò che nessuno ha mai pensato.
(Albert Szent-Gyorgyi, scopritore della vitamina C e premio Nobel)
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